<template>
  <div>
    <div class="search">
      <input class="search-input" v-model="keyword" type="text" placeholder="输入城市名或拼音">
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
        <li class="search-item border-bottom" v-show="hasNoData" >没有找到匹配的数据</li>
      </ul>
    </div>
   </div>
</template>

<script>
import { mapMutations } from 'vuex'
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  methods: {
    handleCityClick (city) {
    //   this.$store.dispatch('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach(element => {
            if (element.spell.indexOf(this.keyword) > -1 || element.name.indexOf(this.keyword) > -1) {
              result.push(element)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style lang="stylus" scoped>
@import '~styles/variables.styl';
    .search
      height 0.72rem
      background $bgcolor
      padding 0 0.1rem
      .search-input
        width 100%
        height 0.62rem
        line-height 0.62rem
        text-align center
        border-radius 0.06rem
        color #666
        padding 0 0.1rem
        box-sizing border-box
    .search-content
      position absolute
      top 1.58rem
      left 0
      right 0
      bottom 0
      overflow hidden
      z-index 1
      .search-item
        line-height 0.62rem
        padding-left .22rem
        color #666
        background #fff
</style>
